This is a 3D wooden puzzle modeled after a ballista from an ancient siege on the battlefield. The scaling is based on the original ballista, and the appearance features ancient elements such as decorative patterns. Generally, the string of the crossbow bolt is curved, and this product uses the bow as its foundation. The string of the crossbow body has been improved to match the characteristics of ancient siege equipment.

Patterns that complement the ancient siege equipment are curved around the base and the crossbow body. The product only requires a gentle pull of the trigger, allowing you to experience the joy of operating siege equipment. This 3D wooden puzzle by ROKR is a perfect educational toy for children, teenagers, and adults. Challenge yourself by assembling it with your own hands.

The base is equipped with a planetary gear structure that allows for a 360-degree rotation, driving the crossbow body and adjusting the shooting position of the crossbow.

Rotate the side handle to adjust the angle of the crossbow body via the gear drive and lock the position with the ratchet. To adjust the angle downward, you need to release the ratchet and turn the handle again.

Use rubber bands to gather force and achieve a string tension mechanism. Hook the string with teeth (hooks), place the arrow in the arrow groove of the crossbow body, adjust the angle of the crossbow body, and pull the trigger to create the "tooth." It retracts, the string is unhooked, and the kinetic energy generated by the rapid recoil of the released string is used to launch the projectile.